Bulb or tube stretcher or expander



(Ho IIodeL) P. UNSINGER & G. HANNES.

BULB 0R TUBE STRETCHER 0R BXPANDER.

No. 544,268. Patented Aug. 6,1895.

UNITED STATES PATENT OFFICE.

PETER UNSINGER AND GEORGE IIANNES, OF FREMONT, OHIO.

BULB OR TUBE'STRETCHER OR EXPANDER.

SPECIFICATION forming part of Letters Patent No. 544,268, dated August6, 1895. A plication filed February 9, 1895- Serial No. 537,812- (Nomodel.)

To all whom) it may concern.-

Be it known that we, PETER UNSINGER and GEORGE IIANNEs, citizens of theUnited States, residing at Fremont, in the county of Sandusky and Stateof Ohio, have invented certain new and usefullmprovementsin Bulb or TubeStretchers or Expanders, of which the following is a specification.

This invention relates to new and useful improvements in forceps, andparticularly to those which are used for stretching or expanding bulbsor tubes.

The object of the invention is to produce forceps having jaws soconstructed as to enter tubing or apertures in elastic material and beforced apart by pressure on the handles, thereby enlarging the size ofthe aperture and allowing a ready connection with another tube orobject.

A further object of the invention is to provide forceps simple andcomparatively inexpensive in construction, strong, durable, andthoroughly efficient.

With these and other objects in view, the inventionconsists in thevarious novel details of construction, arrangement, and combination ofparts to be hereinafter more fully set forth and specifically claimed.

In describing the invention in detail, reference is had to theaccompanying drawings,

forming part of this specification, wherein like numbers denotecorresponding parts in the several views, in which-,-

Figure 1 is a view in perspective of our improved forceps, and Fig. 2 isa plan view thereof. Fig. 3 is a detail view showing the jaws curved.

By reference to the drawings, it will be seen that the forceps arecomposed of duplicate parts consisting of bodies 1 1, each of which arestamped from a single pieceof metal with lugs or cars 2, apertured toreceive the pivotal pin 3. The body'is grooved longitudinally and thelugs of one section fit between the lugs of the oppositelyfaced section,wherein they are held by the pivotal pin above referred to. g

A U-shaped spring 2 (not fully shown) is seated in the grooves, with theloop thereof surrounding the pivotal pin.

The operating ends 4 are slightly rounded, and the opposite walls of thegrooves are compressed to form recesses to receive the taper-- ingmetallic jaws 5, with the ends 6 bent at right angles thereto. The jawsare held in position by rivets 7, passing through coincident openings inthe ends and the jaws, as will be apparent.

In the modification illustrated in Fig. 3, the jaws are shown curved.This construction would be especially desirable for many of the uses towhich a tool would be subjected.

In view of the foregoing it will be obvious that various changes in theproportions and other details of construction might be resorted towithout in any manner evading the spirit of this invention.

Having fully described our invention, what we claim as new, and desireto secure by Letters Patent, is-

Forceps composed of oppositely pivoted bodies provided with lugs orears, each body being of a single piece of metal grooved 1ongitudinallya pivotal pin fitting in apertures of the lugs or cars, a springsurrounding the pivotal pin with the ends pressing against the handles,seats formed in the extremities, tapering'jaws riveted therein with thefree ends extending at right angles thereto, substantially as described.

In testimony whereof we have affixed our signatures in the presence oftwo witnesses.

PETER UN SIN GE R. GEORGE HANNES. Witnesses:

HORACE S. BUCKLAND, E. H. HILT.

